I would like to update my KDE Desktop. I am using Kubuntu 11.10 with KDE 4.7, but I would like to install KDE 4.8.
I think that I have to add tne next PPA: kubuntu-ppa/backports, and then run sudo apt-get dist-upgrade.

Is the software in this PPA stable? If so, why is not a default repository?

Software in PPAs is usually untested by anyone other then the PPA owner and users. ...and the PPA description tells you as much.
–
mikewhateverApr 12 '12 at 18:18

if it makes you feel better, I've been using that PPA for a couple of months now and the only issue I've had is with my KMix dying sometimes, a restart solves this
–
Dirk Hartzer WaldeckApr 13 '12 at 10:08

1 Answer
1

Stable release updates are automatically recommended to a very large
number of users, and so it is critically important to treat them with
great caution. Therefore, when updates are proposed, they must be
accompanied by a strong rationale and present a low risk of
regressions.

When using Backports, it is important to understand that there is an
inherent risk in backporting software. Although backported packages
are tested by the community before they are included in the
repository, there are very occasionally bad interactions with the
older software on your system that are overlooked...